438 Linncean Society. 



Other specimens, gathered near Cobham and Ramsgate, in the same 

 county, and near Moulsey in Surrey, agree with Mr. Winch's plant 

 in their stalked pappus and branched stem, and probably therefore 

 belong to Barkhaiisia taraxacifolia. The only British specimens in 

 the Society's possession that Mr. Kip})ist believes to be referrible 

 with certainty to Crepis biennis are two in the Hortus Siccus of 

 Mr. Woodward, with ripe achenia and perfectly sessile pappus ; the 

 habitats of the plants are not given, but in all probability they were 

 gathered either in Suffolk or Norfolk. 



Read also an " Extract from a Letter to John Miers, Esq., F.L.S., 

 from George Gardner, Esq.," dated Rio de Janeiro, Dec. 16, 1840, 

 in which Mr. Gardner gives some account of his journeys in the in- 

 terior of Brazil, and of the collections made by him subsequent to 

 May last. 



April 6.— Mr. Forster, V.P., in the Chair. 



Read, an Exti-act of a Letter from J. Burnham, Esq., to Hyde 

 Clarke, Esq., F.L.S., on a supposed new British Juncus. 



Read also the commencement of " An Appendix or Supplement 

 to a Treatise on the (Estri and Cuterebree of various Animals." By 

 Bracy Clark, Esq., F.L.S., Corresp. Memb. of the French Institute. 



April 20. — Mr. Brown, V.P., in the Chair. 



His Grace the Duke of Northumberland, F.L.S., sent for exhibi- 

 tion a specimen of the fruit of Chrysophyllum monopyrenum, Sw., 

 from his living collection at Syon House. 



W. Felkin, Esq., F.L.S., sent for exhibition specimens of Sea- 

 Island Cotton grown in a cotton-mill situate in the centre of Man- 

 chester, accompanied by a Notice of the circumstances under which 

 the experiment was made. The details have been given in the 

 Transactions of the British Association. 



Read the conclusion of Mr. Bracy Clark's "Appendix or Supple- 

 ment to a Treatise on the (Estri and Ctiterebrce of various Animals." 



The first memoir to which this paper is intended as an Appendix 

 appeared in the third volume of the Linnsean Transactions, published 

 in 1796. This memoir was republished by the author with consi- 

 derable additions in 1815, and a Supplement was added in the fol- 

 lowing year. Since that period much has been published on the sub- 

 ject, and Mr. Clark is desirous in consequence of making some ad- 

 ditions and corrections to his former publications. 



After adding to and modifying some of the passages contained in 

 them, he examines the validity of several species of the genus CEstrus 

 proposed by writers. He suspects CE. Tronipe of Modeer and CB. 

 ericetorum of Leach to be severally the males of (E. Tarandi and (E. 

 Bovis. He believes GC. Pecorum of Fabricius to be only a dark- 

 coloured variety of (E. nasalis, L. {(E. veterinus, B. CI.) ; and is sa- 

 tisfied by an examination of the original specimen, that Dr. Leach's 

 (E Clarkii is nothing more than a very light-coloured variety of the 

 same species. He also regards Q^j. lineatus of Villars as synonymous 

 with (E. Bovis. 



Referring to Latreille's account of the genus in Cuvier's ' R^gne 



